Java获得系统当前年份 日期

public class TestClass {

public static String getYear(){
Calendar ca = Calendar.getInstance();
ca.setTime(new java.util.Date());
String year = ""+ca.get(Calendar.YEAR);
System.out.println(year);
return year;
}

public void getYear2(){
Calendar ca = Calendar.getInstance();
ca.setTime(new java.util.Date());
SimpleDateFormat simpledate = new SimpleDateFormat("yyyyMMdd");
String date = simpledate.format(ca.getTime());
int year = ca.get(Calendar.YEAR);
int month = ca.get(Calendar.MONTH);
int day = ca.get(Calendar.DAY_OF_MONTH);
System.out.println(date+"||"+year+"||"+month+"||"+day);
}

public static void main(String[] args){
TestClass TestClass = new TestClass();

TestClass.getYear2();
System.out.println();
TestClass.getYear();
}
}